Showing 1288 products
![[Pre-owned] K18YG/PT900 DIAMOND RING Diamond Ring 0.10ct D0.04ct 8.3g #12.5](http://koufuku.jp/cdn/shop/files/2000000121178_2.jpg?v=1771053915&width=480)
![[Pre-owned] K18YG/PT900 DIAMOND RING Diamond Ring D1.00ct 13.6g #18](http://koufuku.jp/cdn/shop/files/2000000047362_2.jpg?v=1769398106&width=480)
![[Used] K18YG/PT900 DIAMOND RING D1.00ct 11.8g #13](http://koufuku.jp/cdn/shop/files/2000000124544_2.jpg?v=1767586002&width=480)
![[Pre-owned] K18YG/PT900 Emerald Ring, E0.98ct, D0.93ct, 11.4g, #15](http://koufuku.jp/cdn/shop/files/2000000069609_2.jpg?v=1760678194&width=480)
Sold Out
![[Pre-owned] K18YG/PT900 White Opal Ring, OP 1.09ct, D 0.28ct, 7.7g, #14](http://koufuku.jp/cdn/shop/files/2000000037905_2.jpg?v=1766219054&width=480)
![[Used] K18YG/PT950 RUBY Ruby Ring D0.03ct 2.3g](http://koufuku.jp/cdn/shop/files/2000000099453_2.jpg?v=1764915892&width=480)
![[Pre-owned] K18YG/WG RUBY Ruby Ring D0.42ct 6.8g #13](http://koufuku.jp/cdn/shop/files/2000000121680_2.jpg?v=1767586014&width=480)
![[Used] 18K Yellow Gold/Plated Amethyst and Pearl Necklace, 11.7g](http://koufuku.jp/cdn/shop/files/2000000079820_2.jpg?v=1762391103&width=480)
![[Used] K18YG Garnet Ring G11.42ct D0.72ct with Gem Research Japan Sorting 14.6g #14](http://koufuku.jp/cdn/shop/files/2000000073583_2.jpg?v=1745901557&width=480)
![[Used] K9WG RUBY RING Ruby Ring CGL Sorting 5.4g #13](http://koufuku.jp/cdn/shop/files/2000000121710_3.jpg?v=1768808719&width=480)
![[Used] KABANA K18YG TURQUOISE Turquoise Ring 16.5g ONE PRICE 20](http://koufuku.jp/cdn/shop/files/2000000105222_2.jpg?v=1762391161&width=480)
![[Pre-owned] MIKIMOTO K14WG AKOYA PEARL BROACH, P6.3-7.mm, ONE PRICE, 16.3g](http://koufuku.jp/cdn/shop/files/2000000015828_2.jpg?v=1768444653&width=480)
![[Used] MIKIMOTO PT900 DIAMOND Diamond Ring 1.467ct E VS1 d0.38ct 6.1g #12](http://koufuku.jp/cdn/shop/files/2000000069425_3.jpg?v=1752738489&width=480)
![[Used] PT1000 DIAMOND Ring D0.15ct 9.0g #14 with sorting](http://koufuku.jp/cdn/shop/files/2000000009087_3.jpg?v=1750401687&width=480)
![[Used] PT1000 Pure Platinum Ring 6.9g #22](http://koufuku.jp/cdn/shop/files/2000000012797_3.jpg?v=1770275433&width=480)
![[Used] PT850 AKOYA PEARL Akoya pearl ring 9.5mm D 0.18ct 7.7g #12 R](http://koufuku.jp/cdn/shop/files/2000000015248_2.jpg?v=1746180216&width=480)
![[Used] PT850 AQUAMARINE Aquamarine Pendant Necklace AQ3.70ct D0.13ct 8.9g](http://koufuku.jp/cdn/shop/files/2000000106229_2.jpg?v=1762336636&width=480)
![[Pre-owned] PT850 BLACK OPAL Black Opal Pendant Necklace 2.72ct D0.51ct 8.3g](http://koufuku.jp/cdn/shop/files/2000000058566_2.jpg?v=1765012877&width=480)
![[Used] PT850 Emerald Pendant Necklace E1.33ct D0.16ct 2.6g](http://koufuku.jp/cdn/shop/files/2000000106519_2.jpg?v=1764830303&width=480)
KOUFUKU is an e-commerce site that handles a wide range of products, from jewelry and precious metals to brand bags, brand watches, brand apparel, and tableware. In addition to sales, we also offer a purchase service.
![[Used] PT900 SAPPHIRE RING Sapphire Ring S2.57ct D1.51ct 14.3g #15](http://koufuku.jp/cdn/shop/files/2000000071954_2.jpg?v=1768882396&width=480)
![[Pre-owned] MIKIMOTO PT950 ALEXANDRITE RING, A 0.42ct, D 0.62ct, 6.1g, #15, ONE PRICE](http://koufuku.jp/cdn/shop/files/2000000123844_3.jpg?v=1768882396&width=480)
